Bookshelf



FIG. 1 is a front, top and right side perspective view of a bookshelf showing my new design;

FIG. 2 is a top plan;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view, the right side being a mirror image thereof; and,

FIG. 6 is a front, top and left side perspective view with a platform shelf shown in an extended position. 

The ornamental design for a bookshelf, as shown and described. 